Caves in Massís De Sant Llorenç Del Munt I Serra De L`Obac are found within a natural park characterized by unique conglomerate geological formations. These subterranean features, sculpted by water erosion over millions of years, offer insights into natural processes and historical human activity. The massif is home to over 300 caves and chasms.
Last updated: May 17, 2026
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The Cau dels Emboscats is one of the cavities that served as a refuge during the civil war. Specifically, several people hid from Sant Llorenç Savall. The situation of the cave was kept secret for many years after the end of the conflict. It wasn't until October 28, 1956, that Biel Dalmau, from the Mas de les Oliveres, explained its location and history to Josep Maria Torras Homet. The mouth is very irregular. It opens in the form of a chasm that falls on an inclined floor. Then there is a 2 meter ledge leading to the main gallery parallel to the cliff and about 20 meters long. In the middle of the gallery there is a large window that forms a kind of side room poured into the steeply sloping cliff. The cavity ends in an elbow and a small room, where small stalactite formations and parietal crusts can be observed.
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The Sescorts caves, also called Les Corts and Los Estables, are located below the Morral del Drac, on the path that goes from the Estenalles pass to La Mola. The caves are close to the Coma de l'Abella cliff, at the foot of the Petanta Rock. They were used a few years ago to keep cattle and we can still find the roof quite smoky from the fire on the ground that they made. There are 7 small cavities with an approximate length of 25 meters. From inside there are views of the monastery of Sant Llorenç del Munt, at the top of the summit of La Mola.
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The hermitage of Santa Agnès is a chapel built under the rock, near the monastery of Sant Llorenç del Munt, of which it depended. It is located in the cave that bears his name. It is documented since the 14th century and was worshiped until the end of the 18th century. It is one of the architectural vestiges in Sant Llorenç del Munt park that remain today. It is in the Santa Agnès channel on the north side of La Mola, approximately 900 meters above sea level. Traditionally it has been said that it belonged to a convent of religious women although little is known about the congregation to which they belonged. As a point of interest we find sinks inside the cave that have been used as a fountain and cistern until today, attached to the same balma where the chapel is located. This church was built in the medieval period in the Gothic style, in the form of a small rectangular nave with a pointed vault, reinforced with two lateral arches. The part of the head pours into the living rock, leaving an excavated space where there was once an altar. The existence of the hermitage has been documented since the 14th century and it is known that ceremonies were held until the 18th century.
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It is located on the northern slope of La Mola (1,103.3 m), the highest point of the massif, at a distance of about 550 meters from the summit. It is in the pass between the summit of La Mola and the hill of Griera (1,002.4), at the beginning of the Pagès ridge, which forms the backbone of the massif of Sant Llorenç del Munt up to the pass of Eres, southeast of Montcau. It has an elevation of 980.2 m. It is in the municipality of Matadepera, in Vallès Occidental. On the south-west side of the pass where it is located there is the Coma de l'Abella canal and on the north-east side there is the Santa Agnès canal, where the chapel of Santa Agnès is located. It is a monolith of conglomerate with a carbonate composition formed by two large blocks of about 32 meters high, separated at their base, where they leave a large opening. It is the scene of one of the most remote traditional legends of Sant Llorenç del Munt, the legend of the dragon of Sant Llorenç. The first ascent was made on February 11, 1923 by members of the Terrassa Hiking Center.
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The Morral del Dragon or Dragon Cave, is a monolith in the Sant Llorenç del Munt massif. It is located on the north slope of La Mola (1,103.03m), the highest point of the massif, at a distance of about 550 meters from the top. It is on the hill between the top of La Mola and the En Griera hill (1,1002.4 m), at the beginning of the El Pagès ridge, which runs through the Sant Llorenç del Munt massif up to the Eres hill, at southwest of Montcau. It has an elevation of 980.2 m. It is in the municipality of Matadepera, in the Vallès Occidental. On the southwest side of the hill where the Coma de l’Abella channel is located, and on the northeast side is the Santa Agnès channel. Where is the hermitage of Santa Agnès.
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It has 2 irons and a handmade ladder to go down
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The caves in this region are primarily formed within unique conglomerate geological formations. These features, sculpted by water erosion over millions of years, often showcase impressive stalactitic formations, stalagmites, and even feathery aragonite, as seen in places like Cova de Mura.
Yes, the region is rich in historical cave sites. For example, The Blood Hospital is a large ravine that served as a hospital for the Carlist army in the 19th century. Another notable site is the Hermitage of Santa Agnès, a chapel built within a cave, documented since the 14th century.
While many caves require specialized equipment or are currently inaccessible, Sescorts Caves offer a more accessible experience. These seven small cavities, historically used to shelter cattle, are approximately 25 meters long each and provide views of the Sant Llorenç del Munt monastery. Cova de Mura is also conditioned for safe visits and is open from April 1st to November 30th.
The largest known cavity in the massif is Cova Simanya. It boasts a total length of 372 meters and an 8-meter vertical drop, featuring an impressive entrance and a gallery with spectacular stalactitic formations. Cova Simanya is part of a complex of five interconnected cavities. Please note that it is currently not accessible to the public for conservation reasons.
Yes, the Massís de Sant Llorenç del Munt i Serra de l'Obac is home to several chasms. The Avenc de l'Espluga is particularly notable as the only vertical cavity in the massif exceeding 100 meters in depth, reaching a total vertical drop of 123 meters. Access to such sites typically requires specialized speleological experience and equipment.
Absolutely. Morral del Drac, a spectacular monolith, is steeped in ancient legends of a dragon inhabiting the area. Its unique, eroded silhouette and scenic location have made it a site rich in folklore and mystery, inspiring tales of the Dragon of Sant Llorenç.
The natural park offers a variety of outdoor activities. You can find numerous running trails, challenging mountain hikes, and scenic waterfall hikes throughout the massif, often leading to or passing by some of the cave entrances.
Yes, the The Blood Hospital was used by the Carlist army as a hospital during the 19th century. Additionally, the Cau dels Emboscats Cave served as a refuge during the Spanish Civil War, providing shelter to several people from Sant Llorenç Savall.
For caves that are conditioned for safe visits, like Cova de Mura, the visiting season typically runs from April 1st to November 30th. It's always advisable to check specific access information for each cave, as some may have seasonal closures for conservation or safety.
The caves are important habitats for various species. Cova de Mura, for instance, is a significant hibernation site for the greater horseshoe bat (Rhinolophus ferrumequinum), a priority species in the Natural Park. The massif's subterranean environments also host numerous endemic species of cave-dwelling invertebrates.
While inside a cave, views are limited, the locations of some caves offer excellent vantage points. From inside the Sescorts Caves, for example, you can enjoy views of the Sant Llorenç del Munt monastery located at the summit of La Mola. The area around Morral del Drac also provides scenic views from its elevation of 980.2 meters.
The caves in this region are unique due to their formation within the massif's distinctive conglomerate rock, which is composed of ancient alluvial deposits. This geological characteristic, combined with millions of years of water erosion, has created a diverse range of subterranean features, from large cave systems with impressive formations to deep chasms and historically significant shelters.


Extend your search for the best caves by checking out these guides of the top ones in Massís De Sant Llorenç Del Munt I Serra De L`Obac: